20120850621 has 12 divisors (see below), whose sum is σ = 29413614048. Its totient is φ = 13252286664.

The previous prime is 20120850613. The next prime is 20120850661. The reversal of 20120850621 is 12605802102.

It is a happy number.

20120850621 is a `hidden beast` number, since 20 + 12 + 0 + 8 + 5 + 0 + 621 = 666.

It is not a de Polignac number, because 20120850621 - 2³ = 20120850613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120850661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13467025 + ... + 13468518.

It is an arithmetic number, because the mean of its divisors is an integer number (2451134504).

Almost surely, 2^20120850621 is an apocalyptic number.

It is an amenable number.

20120850621 is a deficient number, since it is larger than the sum of its proper divisors (9292763427).

20120850621 is a wasteful number, since it uses less digits than its factorization.

20120850621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26935632 (or 26935629 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 20120850621 in words is "twenty billion, one hundred twenty million, eight hundred fifty thousand, six hundred twenty-one".